Wireless charging device and energy storage cabinet

Abstract

The utility model provides a kind of wireless charging device and energy storage cabinet, belong to wireless charging technical field. Including box, positioning acquisition module, central controller and drive assembly, first coil is equipped in box;Positioning acquisition module is installed in box, for collecting the first position of first coil and the second position of second coil of receiving end equipment;Central controller is connected with positioning acquisition module, for calculating displacement and outputting displacement instruction according to first position and second position;Drive assembly is arranged below box, including X axial drive unit and Y axial drive unit, drive assembly is used to receive displacement instruction, and drive box to move in horizontal direction, to make the center of first coil and second coil alignment;First coil is used to transmit electric energy to second coil by electromagnetic induction after center alignment with second coil.The utility model can significantly shorten charging time, improve the reliability and stability of wireless charging.

Description

Technical Field

[0001] This utility model belongs to the field of wireless charging technology, and more specifically, it relates to a wireless charging device and an energy storage cabinet. Background Technology

[0002] With the rapid development of technology, wireless charging technology has been widely used in many electronic devices due to its convenience. Traditional wired charging requires a charging cable to connect the power source and the device, which has problems such as cable tangling, interface wear, and inconvenience in plugging and unplugging. In some situations where the portability of the device and the flexibility of the usage scenario are highly required, the limitations of wired charging are becoming increasingly obvious.

[0003] In the early stages of wireless charging technology development, charging efficiency and the accuracy of charging position were key factors restricting its further popularization. Early wireless charging devices often required strict alignment between the transmitter and receiver; otherwise, charging efficiency would drop significantly, or even fail to charge properly. This meant that users had to spend a lot of time and effort adjusting the device position, resulting in a poor user experience.

[0004] Furthermore, in complex environments, such as when multiple devices are charging simultaneously or when magnetic field interference exists, traditional wireless charging devices struggle to accurately identify and locate the receiving device, leading to charging errors or failures to charge. Therefore, developing a wireless charging device capable of automatically and accurately aligning the transmitter and receiver coils, thereby improving charging efficiency and stability, is of significant practical importance. Utility Model Content

[0005] The purpose of this invention is to provide a wireless charging device and energy storage cabinet to solve the problem that traditional wireless charging devices in the prior art have difficulty in accurately identifying and locating the receiving device, which easily leads to charging errors or failure to charge.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A wireless charging device includes a housing, a positioning and acquisition module, a central controller, and a driving component. The housing contains a first coil and a transmitting circuit that powers the first coil. The transmitting circuit is electrically connected to the first coil and is used to connect to an external power source. The positioning and acquisition module is installed inside the housing and includes a magnetic sensor for magnetic field sensing and an optical sensor for infrared detection. The positioning and acquisition module is used to acquire the first position of the first coil and the second position of the second coil of the receiving device through infrared detection and magnetic field sensing. The central controller is communicatively connected to the positioning and acquisition module and is used to calculate the displacement based on the first and second positions and output a displacement command. The driving component is located below the housing and includes an X-axis driving unit and a Y-axis driving unit arranged perpendicularly to each other. The driving component is used to receive the displacement command and drive the housing to move horizontally, thereby aligning the centers of the first coil and the second coil. After aligning with the center of the second coil, the first coil transmits electrical energy to the second coil through electromagnetic induction.

[0007] In one possible implementation, based on the above technical solutions, the Y-axis drive unit is positioned above the X-axis drive unit. The X-axis drive unit includes a first motor, a first ball screw mechanism, and a first grating ruler. The first ball screw mechanism is arranged along the X-axis direction, and the output shaft of the first motor is connected to the lead screw of the first ball screw mechanism. A first slider is fixedly mounted on the nut seat of the first ball screw mechanism. The body of the first grating ruler is fixedly mounted parallel to the X-axis direction, and the reading head is fixedly connected to the first slider. The Y-axis drive unit includes a second stepper motor, a second ball screw mechanism, and a second grating ruler. The second ball screw mechanism is arranged along the Y-axis direction, and its base is fixed on the first slider. The output shaft of the second stepper motor is connected to the lead screw of the second ball screw mechanism. The nut seat of the second ball screw mechanism is fixedly connected to the bottom of the housing. The scale body of the second grating ruler is fixedly mounted on the first slider along the Y-axis direction, and the reading head is fixedly connected to the housing.

[0008] In one possible implementation, based on the above technical solutions, the magnetic sensor is a Hall sensor array covered with an electromagnetic shielding layer 4. The Hall sensor array is radially distributed at equal angles in the horizontal plane with the center of the first coil as the origin. The Hall sensor array includes multiple Hall sensors, and the sensing surface of each Hall sensor faces the top of the box. The Hall sensor array is electrically connected to the central controller and is used to detect the magnetic field strength generated by the permanent magnets arranged around the second coil and transmit the detection signal to the central controller. The optical sensor includes a first infrared sensor and a second infrared sensor. The first infrared sensor is arranged along the X-axis of the housing and is used to detect the offset of the first coil in the X-axis direction. The second infrared sensor is arranged along the Y-axis of the housing and is used to detect the offset of the first coil in the Y-axis direction.

[0009] In one possible implementation, combining the above technical solutions, the angle θ between any two adjacent Hall sensors and the center of the first coil in the Hall sensor array satisfies: 15°≤θ≤45°.

[0010] In one possible implementation, based on the above technical solutions, the electromagnetic shielding layer is a high-permeability alloy shielding layer.

[0011] In one possible implementation, based on the above technical solutions, the transmitting circuit further includes an overvoltage and short-circuit protection module. This module includes a transient voltage suppression diode, a power switch, a current sensing resistor, a voltage comparator, and a drive signal control switch. The power switch is connected in parallel with the transient voltage suppression diode. The current sensing resistor is connected in series in the power supply circuit of the first coil. The drive signal control switch has its input connected to the drive signal source of the power switch and its output connected to the gate of the power switch, used to control the on / off state of the drive signal. The voltage comparator has its input connected to both ends of the current sensing resistor, used to compare the detected voltage with a reference voltage. The output of the voltage comparator is connected to the control terminal of the drive signal control switch to control the on / off state of the drive signal control switch based on the comparison result.

[0012] To achieve the above objectives, the present invention adopts another technical solution: an energy storage cabinet includes a cabinet body, a wireless charging device, and a cooling fan; the cabinet body includes multiple independent storage compartments, each storage compartment is equipped with a wireless charging device, and each storage compartment is equipped with a cooling fan at its top.

[0013] The beneficial effects of the wireless charging device and energy storage cabinet provided by this utility model are as follows: Compared with the prior art, firstly, the positioning acquisition module accurately acquires the position information of the first coil and the second coil, and uses the central controller and drive components to achieve automatic alignment, ensuring that the transmitting end first coil and the receiving end coil are always in the optimal coupling position, which greatly improves the efficiency of wireless charging. Compared with traditional wireless charging devices that require manual adjustment of position, this solution can reduce energy loss caused by misalignment, significantly shorten the charging time, and improve the user's charging experience.

[0014] Secondly, when using this wireless charging device, users do not need to manually adjust the position of the receiver. Simply place the device in the storage compartment, and the wireless charging device will automatically complete the positioning and alignment process for fast charging. This feature is particularly useful when users' hands are busy or in complex environments, greatly improving the convenience of wireless charging and further expanding the application scenarios of wireless charging technology.

[0015] Third: The positioning and acquisition module uses a combination of magnetic field induction and infrared detection, enabling accurate identification and positioning of the receiving device in complex electromagnetic environments and under varying lighting conditions. Simultaneously, by utilizing the high-precision positioning and adjustment functions of the drive components and the precise control of the central controller, stable alignment of the first and second coils during charging is ensured, effectively preventing charging interruptions or instability caused by device movement or external interference, thus improving the reliability and stability of wireless charging.

[0016] Fourth, traditional wired charging requires frequent plugging and unplugging of the charging cable, which can easily lead to wear and tear on the device interface and affect the device's lifespan. This wireless charging device, however, uses a contactless charging method, avoiding physical damage to the device interface caused by plugging and unplugging, thus helping to extend the lifespan of the receiving device and reduce user costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a wireless charging device provided in an embodiment of this utility model; Figure 2 A schematic diagram of the positioning acquisition module, central controller, stability sensor, overvoltage and short circuit protection module, cooling fan and drive assembly provided in the embodiment of this utility model; Figure 3 A schematic diagram of the Hall sensor array, first coil, central controller, and overvoltage and short-circuit protection module provided in the embodiment of this utility model; Figure 4 This is a schematic diagram of the overvoltage and short-circuit protection module provided in an embodiment of the present invention; Figure 5 This is a schematic diagram showing the location and structure of the storage room and cooling fan provided in an embodiment of the present utility model; Figure 6 Provided for the embodiments of this utility model Figure 5 A structural schematic diagram; Figure 7 This utility model provides a schematic diagram of the structure of a wireless charging device and energy storage cabinet; Figure 8 A schematic diagram showing the location and structure of the first infrared sensor, the second infrared sensor, the cooling fan, the cabinet, and the storage room provided in this embodiment of the utility model; The labels for the attached figures are as follows: 10. Box body; 11. First coil; 12. Second coil; 20. Positioning and acquisition module; 21. Hall sensor array; 22. First infrared sensor; 23. Second infrared sensor; 24. Electromagnetic shielding layer; 30. Central controller; 40. Drive assembly; 41. X-axis drive unit; 42. Y-axis drive unit; 50. Overvoltage and short-circuit protection module; 51. Transient voltage suppression diode; 52. Power switching transistor; 53. Current sensing resistor; 54. Drive signal control switch; 55. Voltage comparator; 60. Cabinet; 61. Storage room; 62. Cooling fan; 63. Temperature sensor. Detailed Implementation

[0019] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be further explained that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0021] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] The directional terms "inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to include different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0025] The present invention provides a description of a wireless charging device.

[0026] like Figures 1 to 6 As shown, the first embodiment of this utility model provides a wireless charging device, including a housing 10, a first coil 11, a positioning and acquisition module 20, a central controller 30, and a driving component 40. The housing 10 contains a first coil 11 and a transmitting circuit that powers the first coil 11. The transmitting circuit is electrically connected to the first coil 11 and is used to connect to an external power source. A positioning acquisition module 20 is installed inside the housing 10 and includes a magnetic sensor for magnetic field sensing and an optical sensor for infrared detection. The positioning acquisition module 20 is used to acquire the first position of the first coil 11 and the second position of the second coil 12 of the receiving device through infrared detection and magnetic field sensing. A central controller 30 is communicatively connected to the positioning acquisition module 20 and is used to calculate the displacement based on the first and second positions and output a displacement command. A drive assembly 40 is located below the housing 10 and includes an X-axis drive unit 41 and a Y-axis drive unit 42 arranged perpendicularly to each other. The drive assembly 40 is used to receive the displacement command and drive the housing 10 to move horizontally, thereby aligning the centers of the first coil 11 and the second coil 12. After aligning with the center of the second coil 12, the first coil 11 is used to transmit electrical energy to the second coil 12 through electromagnetic induction.

[0027] Specifically, the positioning and acquisition module 20 is installed inside the housing 10, integrating both magnetic field sensing and infrared detection technologies. Since the magnetic field strength varies at different locations, analyzing the magnetic field strength data acquired by the positioning and acquisition module 20 allows for the preliminary determination of the approximate orientation of the second coil 12 relative to the first coil 11. Simultaneously, infrared detection is used to determine the projected position of the first coil 11 on the horizontal plane. Through the coordinated operation of these two detection methods, the first position of the first coil 11 and the second position information of the second coil 12 can be acquired relatively accurately. The central controller 30 is communicatively connected to the positioning and acquisition module 20, receiving the acquired position information in real time. The central controller 30 analyzes and calculates the first and second positions according to a preset algorithm, determining the displacement of the first coil 11 and the second coil 12 in the X and Y axes. Based on the calculated displacement, the central controller 30 generates corresponding displacement commands and sends them to the drive assembly 40.

[0028] The drive assembly 40 is located below the housing 10 and includes an X-axis drive unit 41 and a Y-axis drive unit 42. When the drive assembly 40 receives a displacement command from the central controller 30, it begins to operate, continuously adjusting the position of the housing 10 in the horizontal plane until the centers of the first coil 11 and the second coil 12 are aligned. Once the centers of the first coil 11 and the second coil 12 are aligned, the wireless charging device enters the power transmission phase. After the first coil 11 is powered on, it generates an alternating magnetic field. According to the principle of electromagnetic induction, the second coil 12, located in this alternating magnetic field, will induce an electromotive force, thereby realizing the transmission of electrical energy from the first coil 11 to the second coil 12, charging the receiving device.

[0029] Compared with existing technologies, this wireless charging device has higher charging efficiency and significant practical value.

[0030] The positioning acquisition module 20 accurately acquires the position information of the first coil 11 and the second coil 12, and uses the central controller 30 and the drive component 40 to achieve automatic alignment, ensuring that the transmitting end first coil 11 and the receiving end coil are always in the optimal coupling position, which greatly improves the efficiency of wireless charging. Compared with traditional wireless charging devices that require manual adjustment of position, this solution can reduce energy loss caused by misalignment, significantly shorten charging time, and improve the user's charging experience.

[0031] When using this wireless charging device, users do not need to manually adjust the position of the receiver. Simply place the device near the charging area, and the wireless charging device will automatically complete the positioning and alignment process for fast charging. This feature is especially useful when users' hands are busy or in complex environments, greatly improving the convenience of wireless charging and further expanding the application scenarios of wireless charging technology.

[0032] Third, the positioning and acquisition module 20 employs a combination of magnetic field induction and infrared detection to ensure accurate identification and positioning of the second coil 12 within the receiving device. Simultaneously, the high-precision positioning and adjustment functions of the drive component 40, along with the precise control of the central controller 30, ensure stable alignment of the first coil 11 and the second coil 12 during charging, effectively preventing charging interruptions or instability caused by device movement or external interference, thus improving the reliability and stability of wireless charging.

[0033] Fourth, traditional wired charging requires frequent plugging and unplugging of the charging cable, which can easily lead to wear and tear on the device interface and affect the device's lifespan. This wireless charging device, however, uses a contactless charging method, avoiding physical damage to the device interface caused by plugging and unplugging, thus helping to extend the lifespan of the receiving device and reduce user costs.

[0034] like Figures 1 to 8 As shown, based on the above embodiments, the present invention provides a further specific embodiment as follows: The Y-axis drive unit 42 is disposed above the X-axis drive unit 41. The X-axis drive unit 41 includes a first stepper motor, a first ball screw mechanism, and a first grating ruler. The first ball screw mechanism is arranged along the X-axis direction. The output shaft of the first stepper motor is connected to the screw of the first ball screw mechanism. A first slider is fixedly disposed on the nut seat of the first ball screw mechanism. The body of the first grating ruler is fixedly disposed parallel to the X-axis direction, and the reading head is fixedly connected to the first slider. The Y-axis drive unit 42 includes a second stepper motor, a second ball screw mechanism, and a second grating ruler. The second ball screw mechanism is arranged along the Y-axis direction, and its base is fixed on the first slider. The output shaft of the second stepper motor is connected to the lead screw of the second ball screw mechanism. The nut seat of the second ball screw mechanism is fixedly connected to the bottom of the housing 10. The scale body of the second grating ruler is fixedly mounted on the first slider along the Y-axis direction, and its reading head is fixedly connected to the housing 10.

[0035] In the overall structure of the wireless charging device, the drive assembly 40 is located below the housing 10 and adopts a cross-slide structure, that is, the Y-axis drive unit 42 is stacked on top of the X-axis drive unit 41, and the drive directions of the two are perpendicular to each other. This layout allows the housing 10 to perform two-dimensional movement in the horizontal plane, accurately achieving the center alignment of the first coil 11 and the second coil 12.

[0036] The X-axis drive unit 41 includes a first stepper motor, a first ball screw mechanism, and a first grating ruler. The first ball screw mechanism is arranged along the X-axis direction, and the output shaft of the first stepper motor is directly connected to the lead screw of the first ball screw mechanism, converting the rotational motion of the motor into precise linear motion. A first slider is fixedly connected to the nut seat of the first ball screw mechanism, and the first slider can move linearly along the X-axis direction. To detect the X-axis displacement in real time, the body of the first grating ruler is fixedly set parallel to the X-axis direction, and its reading head is fixedly connected to the first slider.

[0037] The Y-axis drive unit 42 includes a second stepper motor, a second ball screw mechanism, and a second grating ruler. The base of the second ball screw mechanism is fixedly mounted on the first slider, so the entire Y-axis unit can move synchronously with the first slider in the X direction. The output shaft of the second stepper motor is connected to the lead screw of the second ball screw mechanism. The nut seat of the second ball screw mechanism is fixedly connected to the bottom of the housing 10, thereby driving the housing 10 to move along the Y-axis. The scale body of the second grating ruler is fixedly mounted on the first slider along the Y-axis, and its reading head is fixedly connected to the housing 10 for accurately measuring the absolute displacement of the housing 10 in the Y direction. The reading heads of both grating rulers are connected to the central controller 30 via data lines to provide real-time feedback of accurate displacement data.

[0038] Compared to existing technologies, this implementation achieves micron-level positioning accuracy for the housing 10 through the coordinated operation of a stepper motor with precise control, a ball screw with high-precision transmission, and a real-time feedback system based on a layered reference grating ruler, along with the mechanical structure of the cross slide. This is crucial for achieving precise coil alignment and significantly improves the efficiency and stability of wireless charging.

[0039] like Figures 1 to 8As shown, based on the above embodiments, the present invention provides a specific embodiment as follows: the magnetic sensor is a Hall sensor array 21, with an electromagnetic shielding layer 24 covering its outer surface. The Hall sensor array 21 is radially distributed at equal angles in the horizontal plane with the center of the first coil 11 as the origin. The Hall sensor array 21 includes multiple Hall sensors, and the sensing surface of each Hall sensor faces the top of the housing 10. The Hall sensor array 21 is electrically connected to the central controller 30 and is used to detect the magnetic field strength generated by the permanent magnets arranged around the second coil 12 and transmit the detection signal to the central controller 30. The optical sensor includes a first infrared sensor 22 and a second infrared sensor 23. The first infrared sensor 22 is arranged along the X-axis of the housing 10 and is used to detect the offset of the first coil 11 in the X-axis direction. The second infrared sensor 23 is arranged along the Y-axis of the housing 10 and is used to detect the offset of the first coil 11 in the Y-axis direction.

[0040] The second infrared sensor 23 is arranged along the Y-axis of the housing 10 and is used to detect the offset of the first coil 11 in the Y-axis direction. The angle θ between any two adjacent Hall sensors and the center of the first coil 11 satisfies: 15°≤θ≤45°, and the electromagnetic shielding layer 24 is a high permeability alloy shielding layer.

[0041] The Hall sensor array 21 is radially distributed at equal angles inside the housing 10 near the first coil 11, with the center of the first coil 11 as the origin. A specialized mounting bracket, made of non-magnetic material (such as high-strength plastic), is designed inside the housing 10 to avoid interference with the magnetic field. Precisely machined mounting holes are provided on the bracket, through which the Hall sensors are securely fixed, ensuring their positional accuracy. The angle θ between adjacent sensors is strictly controlled within the range of 15° ≤ θ ≤ 45°, a range determined through extensive experimental and simulation analysis. When the angle is less than 15°, signal interference may occur between sensors, increasing cost and installation complexity; when the angle is greater than 45°, the detection resolution of changes in magnetic field strength decreases, making it impossible to accurately determine the position of the second coil 12 of the receiving device. For example, in a common wireless charging device, 12 Hall sensors are selected, evenly distributed at 30° intervals, forming a complete circular array, which can effectively cover the magnetic field area around the first coil 11.

[0042] Each Hall sensor consists of a sensing element, an amplifier, and an output circuit. When a permanent magnet surrounding the second coil 12 of the receiving device approaches the first coil 11, the magnetic field generated by the permanent magnet acts on the sensing element of the Hall sensor. According to the Hall effect, a Hall voltage proportional to the magnetic field strength is generated in the sensing element. The amplifier amplifies the Hall voltage and then transmits the amplified signal to the central controller 30 through the output circuit. The central controller 30 calculates the approximate position of the second coil 12 relative to the first coil 11 using a specific algorithm based on the different signal strengths output by multiple Hall sensors. For example, if the magnetic field strength detected by the Hall sensors in a certain area is significantly enhanced, it indicates that the second coil 12 may be close to that area. By comprehensively analyzing the signals from multiple sensors, the position of the second coil 12 can be accurately determined. Hall sensors of models such as SS49E are preferred. These sensors have high magnetic field resolution and can detect minute changes in the magnetic field, meeting the position detection accuracy requirements of wireless charging devices. Simultaneously, they have a wide operating temperature range, adapting to different usage environments.

[0043] The first infrared sensor 22 is arranged along the X-axis of the housing 10 to detect the offset of the first coil 11 in the X-axis direction; the second infrared sensor 23 is arranged along the Y-axis of the housing 10 to detect the offset of the first coil 11 in the Y-axis direction; and the installation height of the first infrared sensor 22 and the second infrared sensor 23 is on the same horizontal plane as the first coil 11. A special infrared sensor mounting bracket is designed on the edge of the housing 10, and the size and shape of the mounting bracket are precisely matched with the infrared sensor housing. The infrared sensors are fixed to the mounting bracket with glue or screws to ensure that the two infrared sensors are firmly installed and accurately positioned. Furthermore, in the rectangular housing 10, the first infrared sensor 22 is installed in the X-axis direction of the housing 10, and the second infrared sensor 23 is installed in the Y-axis direction of the housing 10, which can effectively detect the projected position of the first coil 11 in the horizontal direction. Both the first infrared sensor 22 and the second infrared sensor 23 adopt the active infrared detection principle. The first infrared sensor 22 is arranged along the X-axis of the housing 10. It emits infrared light itself. In the environment where the housing 10 is located, an infrared reflector with specific reflective properties can be placed on one side along the X-axis. Specifically, the infrared reflector is installed on the inner wall of the storage compartment 61 of the cabinet 60. The infrared light emitted by the first infrared sensor 22 is directed towards the reflector. When the first coil 11 shifts in the X-axis direction, the angle and intensity of the infrared light reflected back to the sensor by the reflector change. The photodetector inside the sensor converts the received reflected light into an electrical signal. By analyzing and processing the electrical signal, such as calculating the changes in signal intensity and phase, the offset of the first coil 11 in the X-axis direction relative to its initial position can be determined. The working principle of the second infrared sensor 23 is similar to that of the first infrared sensor 22 and will not be described in detail here.

[0044] The offset data detected by the first infrared sensor 22 and the second infrared sensor 23 are transmitted to the central controller 30 via an electrical connection. After receiving this data, the central controller 30 combines it with the position information of the second coil 12 detected by the Hall sensor array 21 to calculate the displacement that the first coil 11 needs to move in the X and Y axis directions, and then outputs the corresponding displacement command to the drive component 40.

[0045] For infrared sensors, the GP2Y0A21YK0F model is recommended. The detection range of this type of sensor can be adjusted by changing the transmit power and receive sensitivity to suit wireless charging devices of different sizes and usage scenarios. Furthermore, it has strong anti-interference capabilities and can operate normally under a certain degree of ambient light interference.

[0046] The electromagnetic shielding layer 24 is made of a high-permeability alloy material, which has good flexibility and machinability. The electromagnetic shielding layer 24 is cut into a suitable shape and covered on the surface of the Hall sensor array 21, ensuring there are no gaps between the electromagnetic shielding layer 24 and the Hall sensor array 21, forming a complete shielding space. Rubber sealing strips or metal sealant are used at the edges of the shielding layer to prevent external magnetic fields from entering the shielding space from the edges, ensuring effective shielding.

[0047] High-permeability alloy materials possess extremely high permeability, enabling them to guide external magnetic field lines along the surface of the shielding layer without penetrating it and affecting the operation of the Hall sensor array 21. When an external magnetic field approaches the shielding layer, the magnetic field lines are attracted by the shielding layer and change direction, bypassing the Hall sensor array 21, thus preventing interference from the external magnetic field on the sensor's detection signal. This shielding method effectively improves the accuracy of the Hall sensor array 21 in detecting the magnetic field of the second coil 12, ensuring the reliable operation of the positioning acquisition module 20 in complex electromagnetic environments.

[0048] High-permeability alloy materials typically have a permeability exceeding 100,000, providing excellent shielding performance. In practical applications, manufacturers can select the appropriate thickness of the shielding layer material based on the specific operating environment and the intensity of magnetic field interference. Generally, for environments with strong magnetic field interference, a thicker shielding layer can be chosen to enhance the shielding effect; for environments with weak magnetic field interference, a thinner shielding layer can be selected to reduce costs and weight. Furthermore, during the manufacturing process of the electromagnetic shielding layer 24, special heat treatment and processing techniques can be applied to the material to further improve its permeability and shielding performance.

[0049] like Figures 3 to 6 As shown, based on the above embodiments, the present invention provides a further specific embodiment as follows: The transmitting circuit further includes an overvoltage and short-circuit protection module 50, which includes a transient voltage suppression diode 51, a power switch 52, a current sensing resistor 53, a drive signal control switch 54, and a voltage comparator 55; the two ends of the power switch 52 are connected in parallel with the transient voltage suppression diode 51; the current sensing resistor 53 is connected in series in the power supply circuit of the first coil 11; the drive signal control switch 54 has its input end connected to the drive signal source of the power switch 52 and its output end connected to the gate of the power switch 52, and is used to control the on / off state of the drive signal; the input end of the voltage comparator 55 is connected to the two ends of the current sensing resistor 53, and is used to compare the detected voltage with the reference voltage; wherein, the output end of the voltage comparator 55 is connected to the control end of the drive signal control switch 54, so as to control the on / off state of the drive signal control switch 54 according to the comparison result.

[0050] The overvoltage and short-circuit protection module 50 is used in the transmitter circuit of the wireless charging device to ensure the safe operation of core components such as the power switch 52 and the first coil 11 under abnormal conditions. It includes a transient voltage suppression diode 51, a current sensing resistor 53, a drive signal control switch 54, and a voltage comparator 55.

[0051] In this circuit, the transient voltage suppression diode 51 is directly connected in parallel across the power switch 52, forming the first line of defense against overvoltage. The current sensing resistor 53 is connected in series in the power supply circuit of the first coil 11; its core function is to convert the circuit current into a measurable detection voltage in real time. The voltage comparator 55 is responsible for fault detection; its in-phase input is connected to the current sampling terminal of the current sensing resistor 53, and its inverting input is connected to a preset reference voltage (Vref) to accurately set the overcurrent trigger threshold. The drive signal control switch 54, acting as an actuator, is connected in series in the gate drive signal link of the power switch 52; its on / off state is directly controlled by the output signal of the voltage comparator 55.

[0052] The working process is divided into two scenarios: overvoltage protection and short-circuit protection. When a momentary overvoltage occurs across the power switch 52, the transient voltage suppression diode 51 quickly breaks down and conducts, clamping the voltage within a safe threshold. After the voltage returns to normal, the diode automatically returns to a high-impedance state, and the circuit operates normally. When a short circuit occurs in the first coil 11 or a subsequent circuit, the circuit current increases sharply, and the voltage drop across the current sensing resistor 53 increases synchronously. After the voltage comparator 55 detects that the voltage exceeds the preset reference value, it outputs a high-level signal to the drive signal control switch 54. The control switch then cuts off the drive signal of the power switch 52, turning off the power switch 52, thereby achieving short-circuit protection.

[0053] Simulation tests show that circuits without the overvoltage and short-circuit protection module 50 experience an average of 5 serious failures due to short-circuit faults every 1000 hours. With the module, however, damage to components caused by short-circuit faults is effectively prevented within the same test duration, significantly improving circuit stability. Based on this, the overall expected maintenance cost of the equipment can be reduced by approximately 40%. Furthermore, the module uses a combination of conventional electronic components, requiring no complex algorithms or software support, resulting in low hardware cost, easy integration, and strong adaptability.

[0054] like Figures 1 to 8 As shown, based on the above embodiments, the present invention provides a specific embodiment as follows: an energy storage cabinet includes a cabinet body 60, multiple wireless charging devices and multiple cooling fans 62; the cabinet body 60 is divided into multiple independent storage rooms 61; each storage room 61 is provided with a wireless charging device, and in addition, each storage room 61 is provided with a cooling fan 62 at its top. The operator first places the battery to be charged into the storage room 61. Then, the positioning acquisition module 20 in the wireless charging device acquires the first position of the first coil 11 and the second position of the second coil 12 below the device to be charged through infrared detection and magnetic field induction technology. The central controller 30 calculates the displacement based on the first and second positions and outputs the displacement command. The drive component 40 drives the box 10 of the wireless charging device to translate along the X and Y axes in the horizontal plane according to the displacement command until the center of the first coil 11 and the second coil 12 are aligned. After the alignment is completed, the first coil 11 transmits electrical energy to the second coil 12 through electromagnetic induction. By dividing the interior of the cabinet 60 into multiple independent storage rooms 61, and setting up a wireless charging device in each storage room 61, the goal of charging multiple devices in an orderly and efficient manner is achieved. This improves charging management efficiency and optimizes the utilization of charging space, solving the technical problems of chaos and unreasonable charging space layout that often occur when charging multiple devices simultaneously using traditional charging methods.

[0055] Furthermore, to dissipate the heat generated by the wireless device during charging in a timely manner, a cooling fan 62 is embedded at the top of the storage compartment 61. Each cooling fan 62 is an axial flow cooling fan with a rated airflow ≥50 CFM, controlled by PWM speed regulation. A temperature sensor 63 is placed near the first coil 11 to monitor the temperature in real time and feed it back to the central controller 30. When the temperature exceeds 60℃, the central controller 30 starts the corresponding cooling fan 62 in the storage compartment 61 and adjusts its speed. Further, to improve heat dissipation efficiency, a heat-conducting aluminum plate (not shown in the figure) can be placed on the side wall of each storage compartment 61, and a metal heat-dissipating substrate (not shown in the figure) can be placed at the bottom of the box 10. The metal heat-dissipating substrate and the heat-conducting aluminum plate slide in contact. The cooling fan 62, in conjunction with the metal heat-dissipating substrate and the heat-conducting aluminum plate, can dissipate the heat generated by the wireless charging device during charging in a timely manner, thereby extending the service life of the wireless charging device and improving charging efficiency. This solves the technical problem of device performance degradation or even damage caused by charging heat.

[0056] In actual testing, using this energy storage cabinet to charge multiple devices of different types, the charging management efficiency of the devices was improved by approximately 30% compared to traditional open charging platforms. Due to the independent storage room 61, the charging location of each device is clearly defined, reducing the time spent searching for and organizing devices, while also avoiding mutual interference between devices, making the charging process more stable.

[0057] Experimental tests showed that after 5 hours of continuous charging, the temperature of a wireless charging device without the cooling fan 62 could reach as high as 60℃, while the temperature of the wireless charging device equipped with the heat dissipation plate and the cooling fan 62 could be stably controlled below 40℃. This slows down the aging of the electronic components in the wireless charging device, and according to relevant statistics, its lifespan can be extended by approximately 20%-30%. At the same time, due to the lower temperature, charging efficiency is also improved, with charging time for the same amount of power reduced by approximately 15% compared to the case without cooling.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0059] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0060] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0061] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wireless charging device, characterized in that, include: The housing (10) contains a first coil (11) and a transmitter circuit that supplies power to the first coil (11). The transmitter circuit is electrically connected to the first coil (11) and is used to connect to an external power source. The positioning acquisition module (20) is installed inside the housing (10) and includes a magnetic sensor for magnetic field sensing and an optical sensor for infrared detection. The positioning acquisition module (20) is used to acquire the first position of the first coil (11) and the second position of the second coil (12) of the receiving device through infrared detection and magnetic field sensing. The central controller (30) is communicatively connected to the positioning acquisition module (20) and is used to calculate the displacement based on the first position and the second position and output the displacement command. The drive assembly (40) is located below the housing (10) and includes an X-axis drive unit (41) and a Y-axis drive unit (42) arranged perpendicularly to each other. The drive assembly (40) is used to receive the displacement command and drive the housing (10) to move in the horizontal direction, thereby aligning the center of the first coil (11) with that of the second coil (12). The first coil (11) is used to transmit electrical energy to the second coil (12) by electromagnetic induction after being aligned with the center of the second coil (12).

2. The wireless charging device as described in claim 1, characterized in that: The Y-axis drive unit (42) is disposed above the X-axis drive unit (41). The X-axis drive unit (41) includes a first motor, a first ball screw mechanism, and a first grating ruler. The first ball screw mechanism is arranged along the X-axis direction. The output shaft of the first motor is connected to the screw of the first ball screw mechanism. A first slider is fixedly disposed on the nut seat of the first ball screw mechanism. The body of the first grating ruler is fixedly disposed parallel to the X-axis direction. The reading head is fixedly connected to the first slider. The Y-axis drive unit (42) includes a second stepper motor, a second ball screw mechanism, and a second grating ruler. The second ball screw mechanism is arranged along the Y-axis direction, and the base of the second ball screw mechanism is fixed on the first slider. The output shaft of the second stepper motor is connected to the screw of the second ball screw mechanism. The nut seat of the second ball screw mechanism is fixedly connected to the bottom of the box (10). The scale body of the second grating ruler is fixedly arranged on the first slider along the Y-axis direction, and the reading head is fixedly connected to the box (10).

3. A wireless charging device as described in claim 2, characterized in that: The magnetic sensor is a Hall sensor array (21) with an electromagnetic shielding layer (24) covering its outer surface. The Hall sensor array (21) is radially distributed at equal angles in the horizontal plane with the center of the first coil (11) as the origin. The Hall sensor array (21) includes multiple Hall sensors, and the sensing surface of each Hall sensor faces the top of the box (10). The Hall sensor array (21) is electrically connected to the central controller (30) and is used to detect the magnetic field strength generated by the permanent magnets arranged around the second coil (12) and transmit the detection signal to the central controller (30). The optical sensor includes a first infrared sensor (22) and a second infrared sensor (23). The first infrared sensor (22) is arranged along the X-axis of the housing (10) and is used to detect the offset of the first coil (11) in the X-axis direction. The second infrared sensor (23) is arranged along the Y-axis of the housing (10) and is used to detect the offset of the first coil (11) in the Y-axis direction.

4. A wireless charging device as described in claim 3, characterized in that, In the Hall sensor array (21), the angle θ between any two adjacent Hall sensors and the center of the first coil (11) satisfies: 15°≤θ≤45°.

5. A wireless charging device as described in claim 3, characterized in that, The electromagnetic shielding layer (24) is a high permeability alloy shielding layer.

6. A wireless charging device as described in claim 1, characterized in that: The transmitting circuit also includes an overvoltage and short-circuit protection module (50), which includes: Transient voltage suppression diode (51); The power switch (52) is connected in parallel with the transient voltage suppression diode (51) at both ends; The current sensing resistor (53) is connected in series in the power supply circuit of the first coil (11); The drive signal control switch (54) has its input terminal connected to the drive signal source of the power switch (52) and its output terminal connected to the gate of the power switch (52) to control the on / off state of the drive signal. The voltage comparator (55) has its input terminal connected to both ends of the current sensing resistor (53) and is used to compare the detected voltage with the reference voltage. The output of the voltage comparator (55) is connected to the control terminal of the drive signal control switch (54) to control the on / off state of the drive signal control switch (54) according to the comparison result.

7. An energy storage cabinet, characterized in that: include: The cabinet (60) includes multiple independent storage rooms (61) inside. Multiple wireless charging devices as described in any one of claims 3 to 6, each of the wireless charging devices being disposed in the corresponding storage compartment (61); Multiple cooling fans (62) correspond one-to-one with multiple storage rooms (61), and the cooling fans (62) are located at the top of the corresponding storage room (61).

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